utils.py 文件源码

def iterator_progress_bar(iterator, maxval=None):
    """ Returns an iterator for an iterator that renders a progress bar with a
    countdown timer. """

    from progressbar import ProgressBar, SimpleProgress, Bar, ETA
    pbar = ProgressBar(
        maxval=maxval,
        widgets=[SimpleProgress(sep='/'), ' ', Bar(), ' ', ETA()],
    )
    return pbar(iterator)